FR1419505A - Improvements to optical densitometers - Google Patents
Improvements to optical densitometersInfo
- Publication number
- FR1419505A FR1419505A FR916A FR916A FR1419505A FR 1419505 A FR1419505 A FR 1419505A FR 916 A FR916 A FR 916A FR 916 A FR916 A FR 916A FR 1419505 A FR1419505 A FR 1419505A
- Authority
- FR
- France
- Prior art keywords
- optical densitometers
- densitometers
- optical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003287 optical effect Effects 0.000 title 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/08—Photographic dosimeters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/10—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void
- G01J1/20—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle
- G01J1/22—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using a variable element in the light-path, e.g. filter, polarising means
- G01J1/24—Photometry, e.g. photographic exposure meter by comparison with reference light or electric value provisionally void intensity of the measured or reference value being varied to equalise their effects at the detectors, e.g. by varying incidence angle using a variable element in the light-path, e.g. filter, polarising means using electric radiation detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M1/00—Analogue/digital conversion; Digital/analogue conversion
- H03M1/001—Analogue/digital/analogue conversion
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Molecular Biology (AREA)
- High Energy & Nuclear Physics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Photographic Processing Devices Using Wet Methods (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB627/64A GB1084501A (en) | 1964-01-06 | 1964-01-06 | Improvements in or relating to optical densitometers |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1419505A true FR1419505A (en) | 1965-11-26 |
Family
ID=9707673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR916A Expired FR1419505A (en) | 1964-01-06 | 1965-01-05 | Improvements to optical densitometers |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1419505A (en) |
GB (1) | GB1084501A (en) |
-
1964
- 1964-01-06 GB GB627/64A patent/GB1084501A/en not_active Expired
-
1965
- 1965-01-05 FR FR916A patent/FR1419505A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1084501A (en) | 1967-09-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH442605A (en) | Two-part speculum | |
CH455040A (en) | Solid state light source | |
FR1449163A (en) | Optical brighteners | |
CH430433A (en) | Light meter | |
FR1405235A (en) | Improvements to optical unit assemblies | |
AT255566B (en) | Mast light | |
FR1431233A (en) | Optical brighteners | |
FR1462852A (en) | Improvements to optical interferometers | |
FR1469021A (en) | Improvements to spectrophotometers | |
FR1419505A (en) | Improvements to optical densitometers | |
FR1450280A (en) | Improvements to optical systems | |
FR1392428A (en) | Improvements to mirrors | |
FR1391135A (en) | Improvements to multiple optical printers | |
FR1409650A (en) | Improvements to light sources | |
FR1401281A (en) | Improvements to optical surfaces | |
FR1410323A (en) | Improvements to optical printers | |
FR1426310A (en) | Improvements to optical modulators | |
FR1464200A (en) | Optical filter | |
FR1404558A (en) | Improvements to optical radars | |
FR1459617A (en) | Optical detector | |
FR1439500A (en) | Improvements to optical modulators | |
FR1534023A (en) | Improvements to optical splitters | |
FR1454269A (en) | Improvements to optical systems | |
FR1433422A (en) | Improvements to electro-optical modulators | |
FR1426099A (en) | Improvements made to plansichters |